CN103245304A - Angle sensor provided with temperature compensation optical fibers and used for measuring level angle of pole tower - Google Patents
Angle sensor provided with temperature compensation optical fibers and used for measuring level angle of pole tower Download PDFInfo
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- CN103245304A CN103245304A CN2013101349316A CN201310134931A CN103245304A CN 103245304 A CN103245304 A CN 103245304A CN 2013101349316 A CN2013101349316 A CN 2013101349316A CN 201310134931 A CN201310134931 A CN 201310134931A CN 103245304 A CN103245304 A CN 103245304A
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- jackscrew
- optical fiber
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Abstract
The invention discloses an angle sensor provided with temperature compensation fibers and used for measuring a level angle of a pole tower. The angle sensor comprises a sensor packaging casing, a base plate, a platy swing arm, a swing hammer, a first jackscrew and a second jackscrew, wherein the base plate is fixedly connected to the top of the sensor packaging casing; one end of the platy swing arm is fixed on the base plate; the swing hammer is fixed at the other end of the platy swing arm; the first jackscrew is arranged on the left side of the sensor packaging casing and corresponds to one end of the swing hammer; the second jackscrew is arranged on the right side of the sensor packaging casing and corresponds to the other end of the swing hammer; strain detection optical fiber Bragg gratings are attached in the length direction of the platy swing arm; and environment temperature detection optical fiber Bragg gratings are in series connection with the strain detection optical fiber Bragg gratings. According to the angle sensor, high-precision level angle measurement of the pole tower can be realized and is not affected by an electric field or the environment temperature.
Description
Technical field
The present invention relates to the The Optical Fiber Angle Transducer technical field, be specifically related to a kind of band temperature compensation The Optical Fiber Angle Transducer for the measurement of shaft tower level angle.
Technical background
The level angle of high-voltage transmission line pole tower is an important indicator of reflection pole tower operation state.Because influences such as icing, conductor gallopings, the collapse accident of high-voltage transmission line pole tower happens occasionally.The health status that the level angle of shaft tower is measured the monitoring shaft tower has important indicative function, and therefore, power department requires the level angle of periodic monitoring shaft tower.The angular transducer of electric class is adopted in the monitoring of conventional high-voltage transmission line pole tower level angle, or by the tester under the tower with specialized equipment to the shaft tower level angle measure, record, analyze the level angle of shaft tower then.The monitoring mode of above-mentioned high-voltage transmission line pole tower level angle often exists and is subject to the high-voltage electric field environmental impact, is subject to climate effect, low precision, waste of manpower, shortcoming such as can not monitor in real time.
Summary of the invention
The objective of the invention is at above-mentioned technical matters, a kind of band temperature compensation The Optical Fiber Angle Transducer for the measurement of shaft tower level angle is provided, this angular transducer can be realized high-precision shaft tower level angle measurement, and is not subjected to the influence of electric field and environment temperature.
For realizing this purpose, the band temperature compensation The Optical Fiber Angle Transducer that is used for the measurement of shaft tower level angle that the present invention is designed, it is characterized in that: it comprises the sensor package housing, be fixedly connected on the substrate of sensor package case top, one end is fixed on the sheet swing arm on the substrate, be fixed on the pendulum of the sheet swing arm other end, be arranged on sensor package housing left side and first jackscrew corresponding with pendulum one end, be arranged on sensor package housing right side and second jackscrew corresponding with the pendulum other end, wherein, be fitted with the strain detecting Fiber Bragg Grating FBG on the length direction of described sheet swing arm, described strain detecting Fiber Bragg Grating FBG is in series with environment temperature detection fiber Bragg grating.
Described first jackscrew and sensor package housing are connected by adjusting screw between the left side; Also be connected by adjusting screw between described second jackscrew and the sensor package housing right side.
Described sheet swing arm is the swing arm of spring steel sheet.
The thickness range of described sheet swing arm is 0.8 ~ 1.2 mm, and the length range of described sheet swing arm is 6.5 ~ 7.5 cm.
The length range of Bragg grating is 1 ~ 2cm in the described strain detecting Fiber Bragg Grating FBG.
Described sensor package housing is the rectangular parallelepiped housing.
The present invention uses advanced fiber grating sensing technology, designs passive shaft tower level angle sensor.Have the electromagnetic interference (EMI) of not being subjected at the fine grating temperature sensor of high pressure shaft tower glazing with respect to traditional electricity temperature sensor, need not power supply, measuring accuracy height, resolution height, the advantage that response speed is fast.The mean free error time of sensor of the present invention is 15 years, but prolonged application is in high temperature, high humidity and there are the rugged surroundings of chemical erosion.Sensor of the present invention can utilize optical fiber as light transducing signal passage in use, can realize and remote equipment between direct-connected, solved original electrical sensor because the later maintenance difficult technologies problem that power-supply unit brings need to be installed.
In addition, sensor of the present invention can carry out the level angle of shaft tower in real time, on-line monitoring, the generation of the accident of falling the tower that helps to prevent that conductor galloping, icing from causing, operation to electrical network provides safety guarantee, and also the quality of life for development and national economy and broad masses of the people provides safeguard.Can also monitor the very difficult or immeasurable head of mast level angle variation of manual measurement method accurately, solve the variety of issue that the manual measurement method is brought.
The principle that the present invention utilizes Bragg grating to detect passive shaft tower level angle is: optical fiber sensing technology is that to be accompanied by a kind of that the development of light transmitting fiber and Fibre Optical Communication Technology develops rapidly be that carrier, optical fiber are the novel sensing technology of medium, perception and transmission outer signals with light.The present invention utilizes Bragg grating as the functional Fibre-Optic Sensors of sensitive element, its sensing principle is the photosensitivity of utilizing fiber optic materials, space interference fringe with ultraviolet light forms the space phase grating in fibre core, according to extraneous physical parameter the influence of reflecting Bragg grating centre wavelength is come the extraneous physical values of inverse detection.The influential physical quantity of Bragg grating centre wavelength there are two kinds: temperature and stress.And, the variation of Bragg grating centre wavelength and temperature and stress are linear, because the insulativity of optical fiber itself, light signal is not subject to the electromagnetic environment influence, can be used for the variation of monitoring shaft tower level angle so Fiber Bragg Grating FBG is packaged into the level angle sensor, do the precision that temperature compensation can improve angle monitor with a grating that is in free state.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is mounting structure synoptic diagram of the present invention.
Wherein, 1-pendulum, 2-the first jackscrew, the swing arm of 3-sheet, 4-substrate, 5-environment temperature detection fiber Bragg grating, 6-sensor package housing, 7-the second jackscrew, 8-strain detecting Fiber Bragg Grating FBG, 9-adjusting screw.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples:
The band temperature compensation The Optical Fiber Angle Transducer that is used for the measurement of shaft tower level angle as shown in Figure 1, it comprises sensor package housing 6, be fixedly connected on the substrate 4 at sensor package housing 6 tops, one end is fixed on the sheet swing arm 3 on the substrate 4, be fixed on the pendulum 1 of sheet swing arm 3 other ends, be arranged on sensor package housing 6 left sides and first jackscrew 2 corresponding with pendulum 1 one ends, be arranged on sensor package housing 6 right sides and second jackscrew 7 corresponding with pendulum 1 other end, wherein, be fitted with strain detecting Fiber Bragg Grating FBG 8 on the length direction of sheet swing arm 3, strain detecting Fiber Bragg Grating FBG 8 is in series with environment temperature detection fiber Bragg grating 5.The design accuracy of above-mentioned first jackscrew 2 and second jackscrew 7 must guarantee that it acts on position, the left and right sides symmetry on the pendulum 1, when debugging, the installation level could guarantee the precision of original horizontal position and the prestress minimum of strain grating like this, when the occurred level angle changes, sheet swing arm 3 has bending at design direction, just can obtain the level angle variable quantity of direction of measurement like this by strain detecting Fiber Bragg Grating FBG 8.Environment temperature detection fiber Bragg grating 5 reduces the angle detection error that variation of ambient temperature is brought for detection of the variation of ambient temperature in the real time sensor.
In the technique scheme, environment temperature detection fiber Bragg grating 5 is free state in sensor package housing 6.
In the technique scheme, must guarantee that strain detecting Fiber Bragg Grating FBG 8 bonding directions are parallel with sheet swing arm 3, and fixing each point prestress unanimity, minimum bending radius will be guaranteed in the process of grating cloth fibre.
In the technique scheme, be connected by adjusting screw 9 between first jackscrew 2 and sensor package housing 6 left sides; Also be connected by adjusting screw 9 between second jackscrew 7 and sensor package housing 6 right sides.By the motion of adjusting screw 9 realization jackscrews, first jackscrew 2 and second jackscrew 7 clamp pendulums 1 under the original state, and pendulum 1 can not be rocked, and after the installation first jackscrew 2 and second jackscrew 7 are unclamped, and pendulum 1 can be rocked among a small circle.
In the technique scheme, sheet swing arm 3 is the swing arm of spring steel sheet.The thickness range of sheet swing arm 3 is 0.8 ~ 1.2 mm, and the length range of sheet swing arm 3 is 6.5 ~ 7.5 cm.The angle that the version of above-mentioned sheet swing arm 3 can be more accurately should shaft tower takes place changes, and is conducive to improve the sensitivity that the shaft tower angle detects, and very trickle shaft tower angle changes and can both reflect by above-mentioned sheet swing arm 3.
In the technique scheme, the length range of Bragg grating is 1 ~ 2cm in the described strain detecting Fiber Bragg Grating FBG 8.This design is conducive to improve the accuracy that the shaft tower angle detects.
In the technique scheme, sensor package housing 6 is the rectangular parallelepiped housing.
When the present invention uses the sensor outer enclosure is become rectangular parallelepiped, two sensor combinations are used, and are vertically fixed on mutually on the base plate as shown in Figure 2, and base plate is installed on the geometric center place of shaft tower cross-arm, the level angle of measurement of x, y both direction.
In the technique scheme, the induced signal of sensor passes to external processor by strain detecting Fiber Bragg Grating FBG 8 and the environment temperature detection fiber Bragg grating 5 of series connection.
Measurement of angle process of the present invention is: an angular transducer can be measured the angle variation of a direction, before installing first jackscrew 2 and second jackscrew 7 are turned round on earth, pendulum 1 can not be rocked, after the installation first jackscrew 2 and second jackscrew 7 are unclamped, pendulum 1 can be rocked among a small circle.When the base plate occurred level angle of installing changes, pendulum 1 is swung to a direction, sheet swing arm 3 bends, strain detecting Fiber Bragg Grating FBG 8 in the sheet swing arm 3 stretches or compression, can calculate wavelength variable quantity by external processor, deduct the wavelength variable quantity of environment temperature detection fiber Bragg grating 5 again, can in external processor, calculate the horizontal angle changing of direction of sensor representative.At the shaft tower cross-arm level angle sensor is installed, can be realized the real-time monitoring of shaft tower level angle by optical fiber at far-end.
The content that this instructions is not described in detail belongs to this area professional and technical personnel's known prior art.
Claims (6)
1. one kind is used for the band temperature compensation The Optical Fiber Angle Transducer that the shaft tower level angle is measured, it is characterized in that: it comprises sensor package housing (6), be fixedly connected on the substrate (4) at sensor package housing (6) top, one end is fixed on the sheet swing arm (3) on the substrate (4), be fixed on the pendulum (1) of sheet swing arm (3) other end, be arranged on sensor package housing (6) left side and first jackscrew (2) corresponding with pendulum (1) one end, be arranged on sensor package housing (6) right side and second jackscrew (7) corresponding with pendulum (1) other end, wherein, be fitted with strain detecting Fiber Bragg Grating FBG (8) on the length direction of described sheet swing arm (3), described strain detecting Fiber Bragg Grating FBG (8) is in series with environment temperature detection fiber Bragg grating (5).
2. the band temperature compensation The Optical Fiber Angle Transducer of measuring for the shaft tower level angle according to claim 1 is characterized in that: be connected by adjusting screw (9) between on the left of described first jackscrew (2) and the sensor package housing (6); Also be connected by adjusting screw (9) between described second jackscrew (7) and sensor package housing (6) right side.
3. the band temperature compensation The Optical Fiber Angle Transducer of measuring for the shaft tower level angle according to claim 1, it is characterized in that: described sheet swing arm (3) is the swing arm of spring steel sheet.
4. the band temperature compensation The Optical Fiber Angle Transducer of measuring for the shaft tower level angle according to claim 1, it is characterized in that: the thickness range of described sheet swing arm (3) is 0.8 ~ 1.2 mm, and the length range of described sheet swing arm (3) is 6.5 ~ 7.5 cm.
5. the band temperature compensation The Optical Fiber Angle Transducer of measuring for the shaft tower level angle according to claim 1, it is characterized in that: the length range of Bragg grating is 1 ~ 2cm in the described strain detecting Fiber Bragg Grating FBG (8).
6. the band temperature compensation The Optical Fiber Angle Transducer of measuring for the shaft tower level angle according to claim 1, it is characterized in that: described sensor package housing (6) is the rectangular parallelepiped housing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310134931.6A CN103245304B (en) | 2013-04-18 | 2013-04-18 | For the band temperature-compensated fiber angular transducer that shaft tower level angle is measured |
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| CN201310134931.6A CN103245304B (en) | 2013-04-18 | 2013-04-18 | For the band temperature-compensated fiber angular transducer that shaft tower level angle is measured |
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| CN103245304B CN103245304B (en) | 2015-11-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169485A1 (en) * | 2015-04-23 | 2016-10-27 | 山东大学 | Circumferentially-identifiable inclinometer sensor based on fiber grating |
| TWI582392B (en) * | 2015-11-04 | 2017-05-11 | Tilt detector | |
| CN107202545A (en) * | 2017-06-20 | 2017-09-26 | 西安交通大学 | A kind of temperature self-compensation type fiber Bragg grating strain sensor |
| CN112484665A (en) * | 2020-10-13 | 2021-03-12 | 深圳供电局有限公司 | Insulator deflection angle measuring method, device and system |
| CN114674245A (en) * | 2022-02-28 | 2022-06-28 | 江苏大学 | Optical fiber angle sensor and preparation method thereof |
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| WO2011057995A1 (en) * | 2009-11-12 | 2011-05-19 | Areva Np Gmbh | Method and device for determining the deformation of a fuel element of a pressurized-water reactor |
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2013
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| CN101183000A (en) * | 2007-11-19 | 2008-05-21 | 何淑娟 | Visible sensation inclination angle measurement method and device thereof |
| WO2011057995A1 (en) * | 2009-11-12 | 2011-05-19 | Areva Np Gmbh | Method and device for determining the deformation of a fuel element of a pressurized-water reactor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016169485A1 (en) * | 2015-04-23 | 2016-10-27 | 山东大学 | Circumferentially-identifiable inclinometer sensor based on fiber grating |
| TWI582392B (en) * | 2015-11-04 | 2017-05-11 | Tilt detector | |
| CN107202545A (en) * | 2017-06-20 | 2017-09-26 | 西安交通大学 | A kind of temperature self-compensation type fiber Bragg grating strain sensor |
| CN107202545B (en) * | 2017-06-20 | 2019-12-24 | 西安交通大学 | Temperature self-compensating fiber grating strain sensor |
| CN112484665A (en) * | 2020-10-13 | 2021-03-12 | 深圳供电局有限公司 | Insulator deflection angle measuring method, device and system |
| CN112484665B (en) * | 2020-10-13 | 2022-11-22 | 深圳供电局有限公司 | Insulator deflection angle measuring method, device and system |
| CN114674245A (en) * | 2022-02-28 | 2022-06-28 | 江苏大学 | Optical fiber angle sensor and preparation method thereof |
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